Objectives: One aim of this study was to evaluate the relation of scores on
the Multidimensional Affect and Pain Survey (MAPS) that was administered b
efore surgery to postoperative morphine consumption and patient-controlled
analgesia, a second aim of the study was to compare the ability of MAPS adm
inistered postsurgery with the commonly used Numerical Pain Rating Scale to
predict patient-controlled analgesia behavior.
Design: The MAPS questionnaire measures pain, suffering, and well-being. It
was administered to patients 1 day before and 1 day after left hemicolecto
my for colon cancer. The relations of the two scores to postoperative pain
control were determined.
Patients: Thirty-four patients in the surgical ward of a general hospital a
dmitted for colorectal cancer surgery participated in this study.
Results: High preoperative MAPS scores on sensory and emotional words predi
cted postoperative morphine dosage, dose presses, and lockout presses. Grea
ter morphine consumption was correlated positively with high presurgery MAP
S scores in four of the eight "Suffering" subclusters (Depressed Mood, Ange
r, Anxiety, and Fear). High presurgery MAPS scores in 13 of the 17 "Sensory
Qualities" subclusters (e.g., Bothersome, Intense Pain, Pain Extent, Incis
ive Pressure, Traction/Abrasion) were correlated positively with lockout pr
esses, Neither the postsurgery MAPS nor the postsurgery Numerical Pain Rati
ng Scale predicted patient-controlled analgesia behavior.
Conclusion: The emotional states and attitudes of the patients toward pain
before surgery are important factors in determining patient-controlled anal
gesia pressing behavior and postoperative demand for analgesics.